a. [ L. libidinosus, fr. libido, libidinis, pleasure, desire, lust, fr. libet, lubet, it pleases: cf. F. libidineux. See Lief. ] Having lustful desires; characterized by lewdness; sensual; lascivious. -- Li*bid"i*nous*ly, adv. -- Li*bid"i*nous*ness, n. [ 1913 Webster ]